config graphs to show

README.md

@@ -36,7 +36,7 @@ The executable application files are installed under
 separate.
 
 Edit `/opt/cheap_system_monitor/monitor.conf` to choose network interfaces,
-mountpoints, and the graph directory. For example, use
+mountpoints, graphs, and the graph directory. For example, use
 `mountpoints = /, /boot/firmware, /mnt/data` to monitor two additional disks;
 every configured path must be mounted and accessible.
 Restarting is unnecessary after configuration changes—the next timer runs use
@@ -44,6 +44,18 @@ the new values. If the RRD has already been created, do not change the order of
 mountpoints unless you intentionally want the historical graph labels to refer
 to different disks.
 
+Use the `graphs` setting to choose which graphs are generated and shown, and
+to set their dashboard order. Available names are `load`, `cpu`, `thermal`,
+`trouble`, `network`, `disk`, `storage-health`, and `uptime`. For a virtual
+machine where temperature is not meaningful, for example:
+
+```ini
+graphs = load, cpu, trouble, network, disk, storage-health, uptime
+```
+
+Omitting a graph does not disable collection of its underlying metrics. This
+keeps the RRD schema consistent if the graph is enabled later.
+
 The generated PNG files and four responsive, auto-refreshing dashboard pages
 are placed in `/var/www/html/system-monitor` by default. `index.html` shows
 the last 3 hours and links to the 1-day, 2-week, and 1-year pages.